allows for the thermostat to always be open never fully completely shutting close. The old ones closed complete, then hoses blew, now you get the trickle and warning you have a problem.
The jiggle valve is a big help in bleeding air when filling an empty system.
allows thermostat to always open all the time
The jiggle valve's a small hole on the thermostat itself (not a separate part). It's merely there to help free the system of trapped air. Follow the hose from the top of the radiator to the motor and you should find the thermostat housing. Removing the housing will reveal the thermostat and at the top of the Tstat should be a small hole -- that would be the jiggle valve (if your thermostat actually has one).
You have to install the thermostat with the jiggle valve in the 12 o'clock position.
The thermostat at the engine in a 2000 Mercury Villager is located Êon the right passenger side near the middle. You should look for the jiggle valve on the thermostat that should be facing up.
Jiggle valve is a small aperture valve in outer casing of engine (IC engines) thermostat which vents the air trapped inside the cooling system when filling or topping up the system with coolant and hence ensures the 'full coolant no air trap' condition in radiator and water jackets.
The thermostat at the engine in a 2000 Mercury Villager is located Êon the right passenger side near the middle. You should look for the jiggle valve on the thermostat that should be facing up.
The bleed hole (or, "jiggle valve" as Ford sometimes calls it) should be in the upper twelve o'clock position.
Most thermostats have a Jiggle pin. Its function is to allow trapped air past a closed thermostat as a build up of air in front of the wax capsule could cause engine damage. The wax capsule relies on coolant to relay heat to operate. If air was surrounding the capsule and the engine was at operating temperature, the stat would remain closed and cause the engine to overheat.
The thermostat is located inside the thermostat housing above the drive belts... (Note: The correct thermostat is equipped with a jiggle valve that allows a small amount of coolant to flow through the thermostat at all times, relieving any excess pressure in the cooling system.) Engine compartment passenger side about 5" back from the distributer cap under the water hose the housing of the thermostat is connected with 4 bolts, it
If it is the 4cly you need to remove your intake, unbolt the thermostat housing from the side of the block (it will be the one with the radiator hose going to it) pull the thermostat out. When replacing with a new thermostat MAKE SURE YOU INSTALL IT WITH THE JIGGLE PIN FACING UP!!!! I repeat JIGGLE PIN FACING UP. Burp the radiator system well and your done. Good Luck
Follow the top radiator hose to the water outlet,remove 3 bolts and pull water outlet off and remove thermostat.: The jiggle valve on the thermostat should always face upward-KA24E engine.Loosen the securing nuts, then remove the water outlet, gasket, and thermostat from the thermostat housing.When installing the thermostat, always use a new gasket with sealer and make sure the thermostat spring is facing the inside of the engine. The water outlet housing on VG30i and VG30E engines has the letters UPR and an arrow embossed on the flange edge; they should always be pointing up. The KA24E, VG30i and VG30E engines have a jiggle valve on the thermostat which should always be facing up. Water outlet mounting screws should be tightened to 12-15 ft. lbs. (16-21 Nm) on all engines but the KA24E, which should be tightened to 5-6 ft. lbs. (7-8 Nm). Refill and check the coolant level
The Jiggle pin allowes any trapped air behind the thermostat to pass through. Without this the engine could overheat. The thermostat uses engin coolant to melt a wax capsule and allow coolant to pass. The engin could be at operating temp and the thermostat would not open due to air being in contact with the capsule instead of the actual coolent. This would most likely lead to an overheating engin, and damage.
It is part of your engine thermostat - if the thermostat is mounted vertically (like it is on the 4.0 L OHV engine ) the thermostat must be installed with the air release valve at the top - Helpfull